System Sensor 2412AT, 2424AT and 2424AIT Direct Wire - Manual (Page 4)

D400-04-00 4 I56-288-05
© System Sensor 1996
Three-Year Limited Warranty
System Sensor warrants its enclosed smoke detector to be free from de-
fects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no
other express warranty for this smoke detector. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter
the obligations or limitations of this Warranty. The Company’s obligation
of this Warranty shall be limited to the repair or replacement of any part of
the smoke detector which is found to be defective in materials or work-
manship under normal use and service during the three year period com-
mencing with the date of manufacture. After phoning System Sensor’s toll
free number 800-SENSOR2 (736-7672) for a Return Authorization number,
send defective units postage prepaid to: System Sensor, Repair Depart- ment, RA #__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please
include a note describing the malfunction and suspected cause of failure.
The Company shall not be obligated to repair or replace units which are
found to be defective because of damage, unreasonable use, modifica-
tions, or alterations occurring after the date of manufacture. In no case
shall the Company be liable for any consequential or incidental damages
for breach of this or any other Warranty, expressed or implied whatsoever,
even if the loss or damage is caused by the Company’s negligence or fault.
Some states do not allow the exclusion or limitation of incidental or conse-
quential damages, so the above limitation or exclusion may not apply to
you. This Warranty gives you specific legal rights, and you may also have
other rights which vary from state to state.
Smoke detectors are designed to activate and initiate emergency action,
but will do so only when used in conjunction with other equipment.
These detectors are designed for installation in accordance with NFPA
standard 72.
Smoke detectors will not work without power. AC or DC powered
smoke detectors will not work if the power supply is cut off for any
reason.
Smoke detectors will not sense fires which start where smoke does
not reach the detectors. Smoke from fires in chimneys, in walls, on
roofs, or on the other side of closed doors may not reach the smoke de-
tector and alarm it.
A detector may not detect a fire developing on another level of a
building. For this reason, detectors should be located on every level of a
building.
Smoke detectors have sensing limitations, too. Ionization detectors of-
fer broad range fire-sensing capability, but they are better at detecting
fast, flaming fires than slow, smoldering fires. Photoelectronic detectors
sense smoldering fires better than flaming fires. Because fires develop in
different ways, and are often unpredictable in their growth, neither type
of detector is always best, and a given detector may not always provide
warning of a fire. In general, detectors cannot be expected to provide
warnings for fires resulting from inadequate fire protection practices,
violent explosions, escaping gas, improper storage of flammable liquids
like cleaning solvents, other safety hazards, or arson. Smoke detectors
used in high air velocity conditions may fail to alarm due to dilution of
smoke densities created by such frequent and rapid air exchanges. Addi-
tionally, high air velocity environments may create increased dust con-
tamination, demanding more frequent maintenance.
Smoke detectors cannot last forever. Smoke detectors contain elec-
tronic parts. Even though detectors are made to last over 10 years, any of
these parts could fail at any time. Therefore, test your smoke detector
system per NFPA 72E at least semiannually. Clean and take care of your
smoke detectors regularly. Taking care of the fire detection system you
have installed will measurably reduce your product liability risks.
WARNING
The Limitations of Property Protection Smoke Detectors
Figure 6:
Detectors that fail these tests should be cleaned as
described under MAINTENANCE and retested. If the
detectors still fail these tests they should be returned for
repair.
Maintenance
NOTE: Before cleaning, notify the proper authorities that
the smoke detector system is undergoing
maintenance, and will be temporarily out of ser-
vice. Disable the system undergoing maintenance
to prevent unwanted alarms.
1. Remove the detector cover by placing a small bladed
screwdriver in the side slot of the detector cover,
twisting it slightly until the cover can be turned
counterclockwise for removal.
2. Vacuum the screen carefully without removing it. If
further cleaning is required continue with Step 3,
otherwise skip to Step 6.
3. Remove the screen by pulling it straight out. Vacuum the
inside.
4. Clean the vaned chamber piece by vacuuming out dust
and particles.
5. To replace the screen, orient it so that the arrow on top
aligns with the field test socket on the detector. Carefully
push the screen into place, making sure it fits tightly to
the chamber.
6. Replace the cover by gently rotating it clockwise until it
locks in place.